Atomic No Of Nickel
Standard atomic weight is used to give the value of the mean of the atomic masses in a mixture of isotopes in a given sample of an element. Atomic Mass of First 30 Elements. Given below is a table that lists the first 30 elements based on atomic number and their corresponding atomic mass. Nickel element has 28 protons, 31 neutrons and 28 electrons. Nickel is a solid metal at room temperature, melting point 1455 ̊C. Nickel element is easy to lose 2 or 3 eletrons, and becomes Ni 2+ or Ni 3+ ions. » Common Nickel compounds. Nickel comes into the d block elements and is a transition metal. The valancy of any element can be determined by its respective electronic configuration since the atomic no. Of nickel is 28. Therefore the electronic configuration would be as follows- Ar 4s2 3d8.
| Isotope | Atomic mass (Da) | Isotopic abundance (amount fraction) |
|---|---|---|
| 58Ni | 57.935 342(3) | 0.680 769(190) |
| 60Ni | 59.930 785(3) | 0.262 231(150) |
| 61Ni | 60.931 055(3) | 0.011 399(13) |
| 62Ni | 61.928 345(3) | 0.036 345(40) |
| 64Ni | 63.927 966(3) | 0.009 256(19) |
Atomic No Of Nickel
All the chemical and mass-spectrometric measurements have agreed to establish a value of Ar(Ni) = 58.70(1).Nevertheless, that value is a little higher than the average (58.694) of Baxter's excellent determinations, whose credibility is increasedby the proof of accuracy of the parallel work on the atomic weight of cobalt.
At its 1989 meeting, the Commission changed its recommended value for the atomic weightof Ni to Ar(Ni) = 58.6934(2) based on recent mass-spectrometric determinations. The excellent agreement between the average of the chemical values and this new determinationillustrates the remarkable accuracy of the determinations of Baxter and associates. In addition,a comparison of the isotopic composition of nickel in many minerals, salts, and metalsshowed no statistically significant variations. Therefore, no additional allowance to the overall uncertaintywas necessary because the isotopic composition of terrestrial Ni is apparently invariant withinthe measurement uncertainty. The Commission increased the uncertainty of the standard atomic weight of nickel in 2009.
It should be noted that the atomic weight of nickel is now one of the most accurately known for a polyisotopic element.
© IUPAC 2003
Atomic No Of Nickel Silver
CIAAW
Nickel
Ar(Ni) = 58.6934(4) since 2007
The name derives from the German Nickel for 'deceptive little spirit' because miners called mineral niccolite(NiAs) by the name Kupfernickel (false copper) because it resembled copper ores in appearance,but no copper was found in the ore. It was discovered by the Swedish metallurgist Axel-Frederik Cronstedt in 1751.
Atomic No Of Nickel Element
Isotopic reference materials of nickel.